I am interested in CA analysis of SLA interaction, both in classrooms and outside. It seems very hard to find the source recording for a lot of published work in this field.
Hepburn & Bolden have some source recordings and transcripts on the companion site of their recent book, Transcribing for Social Research: https://study.sagepub.com/hepburnandbolden
(Not SLA of course ... this is more a 'how to' book).
I supervised a very interesting study on women conversations in a Sudanese context. The study investigated the flow of conversation among Sudanese women of different age groups and social backgrounds. A 22 hours recorded data have been used on the consent of the women being recorded( recordings were made without the women’s prior knowledge to secure reliable results . After recording , the women were told about the recordings and their purpose and asked whether the researcher could use the data or not. If they did not agree the recordings would be corrupted). the most important finding suggests that turn taking is not governed by the rules of conversation. That is , all participants take part in the conversation at the same time and surprisingly, they understand each other without any interruption of the conversation. Unfortunately, the study has not been published , but the thesis is available in the library of Khartoum university.
Antaki's tutorial on CA and transcription: http://ca-tutorials.lboro.ac.uk/intro1.htm
There is a video of an interaction and the transcription is based on it.
It's not a course, but there is also a really nice video explaining the symbols and ways to transcribe on Youtube, by Emily Hofstetter: https://youtu.be/I1LpiIDKp2I
Last, but not least there is this new journal called "Social Interaction". It doesn't have a paywall, so it's great. In addition to it, many articles have snippets of recorded interactions and you can watch them while following the transcription. It isn't intended as a way to learn how to transcribe, but I guess you can learn a lot from it! Here is the link: https://tidsskrift.dk/socialinteraction/index